watin多線程

Question

我如何使用異步委託來處理Watin？我試過，但它返回此錯誤：

The CurrentThread needs to have it's ApartmentState set to ApartmentState.STA to be able to automate Internet Explorer.

Answer 1

我假設你對你的代表使用的BeginInvoke（）。他們使用線程池進行線程化工作，線程池中的線程都是MTA的。你將不得不通過創建自己的主題來以舊時尚的方式來完成它。線程類提供方法（Get/SetApartmentState）來更改公寓模型。

我想你可能還需要你自己的消息泵。

像這樣的東西可能讓你開始：

var th = new Thread(() => { /* do work */ }); 
    th.SetApartmentState(ApartmentState.STA); 
    th.Start(); 

//丹尼爾

Answer 2

，因爲如何在IE COM互操作的作品，它本身需要在單線程單元要運行的性質。以下是從[watin.org]頁上覆制對象1

Why is setting the ApartmentState needed in the first place?

Copied from MSDN:

「Because COM classes use apartments, the common language runtime needs to create and initialize an apartment when calling a COM object in a COM interop situation. A managed thread can create and enter a single-threaded apartment (STA) that allows only one thread, or a multithreaded apartment (MTA) that contains one or more threads.」.

Since Internet Explorer is not Thread safe we need to use STA.

Implications

Using WatiN works fine in a console or GUI application when you apply the [STAThread] attribute to the main method (the sole entry point of the application). This way the main Thread runs as STA and all goes well. When using a runner like MBUnit, NUnit or any other runner that starts the main Thread, your code/tests depend upon the ApartmentState the runner started with.

Behaviour of WatiN when Thread is not an STA Thread.

WatiN will throw a ThreadStateException when you create an instance of the WatiN.Core.IE class, to help you remind to set the ApartmentState to STA.

Answer 3

使用RequiresSTA屬性，開始使用Nunit 2.5。

編輯

使用Apartment屬性，從NUnit的3.0。